6 to 8 hrs for digestion. it stays in the stomach for 2 hours and then in the intestine for another 2 hours. the undigested food goes to the large intestine and the digested food goes to whole body through blood. Carbhydrates and proteins about 1 1/2 -2 hrs. Fats 2 hrs.
And based on that a foetus does not posses self-awareness. Human babies have been found to become self aware between the ages of 18-24 months. The rouge test is a self-recognition test that identifies a human child's ability to recognize a reflection in a mirror as his or her own.
When do Humans Develop Consciousness?, Part 3: Self-Awareness February 22, 2009. Posted by ews8704 in Philosophy of biology, Philosophy of mind. My 3rd grade teacher, Mrs. Wilkens, had us hatch baby chicks in the classroom as part of our biology curriculum.